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The average elevation of the city is currently between 1 and 2 feet (0.30 and 0.61 m) below sea level, with some portions of the city as high as 20 feet (6 m) at the base of the river levee in Uptown and others as low as 7 feet (2 m) below sea level in the farthest reaches of Eastern New Orleans.
This is a list of places on land below mean sea level. Places artificially created such as tunnels, mines, basements, and dug holes, or places under water, or existing temporarily as a result of ebbing of sea tide etc., are not included. Places where seawater and rainwater is pumped away are included.
Today, a large portion of New Orleans is at or below local mean sea level and evidence suggests that portions of the city may be dropping in elevation due to subsidence. A 2007 study by Tulane and Xavier University suggested that "51% of the contiguous urbanized portions of Orleans, Jefferson, and St. Bernard parishes lie at or above sea level ...
Gert Town is one of the points of lowest elevation in New Orleans, currently ranging from 0 to −4 meters below sea level. [11] According to geographer Richard Campanella, "vertical migration" patterns, based on topographical elevation, appeared to have a specific effect from 1920 to 2000 in New Orleans. There is no evidence suggesting that ...
Mammon and Manon in Early New Orleans: The First Slave Society in the Deep South, 1718–1819. Knoxville: University of Tennessee Press. ISBN 978-1572330245. Jackson, Joy J. (1969). New Orleans in the Gilded Age: Politics and Urban Progress, 1880–1896. Baton Rouge: Louisiana State University Press. Leavitt, Mel (1982). A Short History of New ...
A 1999–2001 study, led by Richard Campanella of the Tulane School of Architecture, used LIDAR technology and found that 51% of the terrestrial surface of the contiguous urbanized portions of Orleans, Jefferson, and St. Bernard parishes lie at or above sea level, with the highest neighborhoods at 10–12 feet (3.0–3.7 m) above mean sea level ...
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During both moderate and severe floods of the Mississippi, the Bonnet Carré Spillway can also be opened to help protect New Orleans, many parts of which are below sea level. The Bonnet Carré Spillway, built after the Great Mississippi Flood of 1927, is located well downstream of Morganza, where the Mississippi River approaches Lake ...